Method for modifying polyfumaric acid diester
US4670520A · kind A · utility
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3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1986 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Jan 28, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
According to the invention, a method for modifying a polyfumaric acid diester is provided. The method comprises subjecting the polyfumaric acid diester to thermal treatment to thereby obtain a polyfumarate having carboxyl groups. The polyfumaric acid diester is obtained by polymerizing a fumaric acid diester represented by the following general formula of: ##STR1## wherein R represents an alkyl group having 1 to 12 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms or an organic residue having at least one aromatic ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.